When you think of potential threats to electoral integrity, your mind conjures up all sorts of images. You start to imagine shadowy state actors toiling away from seedy basements in Moscow, or anarchic young hacktivists doing it for the lulz. In Belgium, they’ve got another potential foe to contend with: the actual polling agents themselves. It turns out that Belgium’s voting machines store a record of each vote on a USB stick. This drive uses a Linux-compatible filesystem — presumably because that’s what the voting machines themselves run. What happens when you shove one of the sticks into a computer…